What;s Wrong With My RAM Truck????

mustang071 wrote:
Thanks to all of you for the replies.

The Dodge Tech (thinking a freeze-up) suggested low Freon and serviced the system. Then said if the problem continued to stop and let it sit for awhile before restarting. We did all that, but it had no positive effect. And, as far as I can tell, the blower motor continues to run but the airflow diminishes to almost nothing at low RPM.

The strange thing to me is that it doesn't do this any other time except the very end of our trips. Why wouldn't it happen when we started out or during the entire excursion of two weeks?

Ok now we are getting somewhere.

Broken blend door. Take the blower motor out from under the dash. Screws will be facing down. 3 screws. Lower the motor, stick your hand up in there and feel for the loose plastic door, like a flap. Wiggle it out through the hole the blower motor was in. Replace the blower motor. And enjoy.

This door blends the outside air and inside air. So you will technically not have "MAX A/C" anymore, though on the dash it will still say its working.

The HVAC on these trucks have been kind of a wreck since day one. You can pay the $$$ to have it fixed like factory, but it will happen again.
Also, with the blend door gone, the fan will actually feel like its blowing harder, more airflow.
And lastly, if you put slightly more refrigerant in then what Dodge calls for, it blows quite a bit cooler air.

Been there, done that, on all of it.


btw, the blend door moving around in the HVAC is what is cutting off the airflow. As for it happening at certain times is just luck, or unlucky, lol.